Insulated trolley-hanger



G. H.- BOLUS.

INSULATED TROLLEY HANGER.

APPLICATION FILED in: 19, 19:9.

1 ,3645028, Patented Dec. 28, 1920.

814012 Mto'c UNITED STATES PATENT oFrlcs.

GLENN HENRY BOLUS, OF MANSFIELD, OHIO, ASSIGNOR TO THE OHIO BRASS COM-IPANY, OF MANSFIELD, OHIO, A CORPORATION OF NEW JERSEY.

INSULATED TROLLEY-HANGER.

Specification of Letters Patent.

Patented Dec. 28, 1920.

Application filed June 19, 1919. Serial No. 305,289.

To all whom it may concern Be it known that I, GLENN H. Bonus, a citizenof the United States, residing at Mansfield, in the county of Richlandand State of Ohio, have invented certain new and useful Improvements inInsulated Trolley-Hangers, of which the following is a specification.

This invention relates to supports for trolley wires and to that classof supports better known as trolley wire hangers.

The object of my device is to provide a simple arrangement of partswhereby the trolley wire can be efliciently and securely suspended fromits overhead support and insulated therefrom preferably by means ofinsulator material of a vitreous character and to also arrange the partsof my device so that the same can be installed easily and conveniently.

In the various figures I have shown in Figure 1 a top plan view of mydevice as installed upon a cross span wire. In Fig. 2 I have shown aside elevation as installed upon a span wire. In Fig. 3 I have shown aview of the parts looking down upon the same and in partial assembledrelation to show better how the insulating member is inserted anddisengaged from the hanger member. In Fig. 4: I have shown a sectionalview on the line 4--4 of Fig. 1 which better shows the interlock of thehanger member and porcelain member and the supporting bolt.

The device comprises a supporting member 1 with a hinge member 2 securedtogether by means of a pin 3. Clamped between the members 1 and 2 is theinsulating element 4 provided with a through bolt 5 which has a threadedportion at the lower end for attachment to the trolley ear, hanger,etc., and which is provided with an enlarged head of irregular contourand which rests within a cavity in the porcelain member 4, the shape ofwhich conforms to that of the head of the bolt and therefore preventsthe rotation of the bolt relatively to the insulating member. Positionedbetween the head of the bolt and the insulating member is a cushion 7 oflead, fiber, leather, mica, rubber, etc., by means of which the stressbetween the bolt and the porcelain and the porcelain and the ear orhanger which is screwed up against the lower face of the porcelain, isrelieved thereby preventing the rupture of the insulating member 4especially when porcelain or other vitreous material is use The member9. completes the protection of the insulating element 4 from beinginjured by a flying trolley pole, as it is brought down sufiicientlywith relation to the lower edge of the member 4 to receive the blow fromthe trolley pole. I have also found in hangers using a support memberwhich only par tially surrounds the insulated member and which coactswith the span wire to support the hanger and the span wire contacts withthe insulating member, that the span wire will in time injure theinsulating member and especially when the insulating member is of avitreous character, as the uneven surface of the span wire pressesagainst the surface of the insulator at the point of contact and thispressure is often sufficient to set up strains in the insulator whichmake it very liable to injury. At the same time the use of the hingedsupport member distributes any strain between the supports 1 and 2 andthe insulating member uniformly about the insulating member andautomatically grips the insulat ing member in a degree proportional tothe stress in the span wire.

Both the members 1 and 2 are provided with a beaded portion 8 and theinsulating member 4 is provided with a groove 9 adapted to cooperatewith the bead 8 there by preventing the displacement of the part wheninstalled. To better support the part in place, shoulders 10 and 11 areformed on the insulating member and these ooact with adjacent faces onthe hanger members 1 and 2, thereby tending to prevent side movement ofthe parts relatively to each other and to better distribute the strainbetween the parts.

In installing my device I first place the bolt 5 in position in theinsulating member 4 and to the lower end of the bolt I secure thetrolley clamp or ear which is done by rotating the bolt and insulatingmember together. I then place in position the hanger members 1 and 2 sothat the bead 8 engages the groove 9 and then the assembled parts aresecured to a span wire 12 by snapping the span wire into position withinthe lugs 13 secured to the arm 14. The lugs 13 are open on one side inthe usual manner with hangers of this character. This causes the spanwire to draw the members 1 and 2 into position and firmly hold themthere.

I have found it desirable to locate in the lower face of the insulatingmember adj acent the bolt and against which the flange of the hanger orear contacts, one or more radiating slots 15 which serve the purpose ofpermitting any moisture which might pass between the bolt and theporcelain and downward to the threads, to run off and also permits of acirculation of air to dry off any such moisture which might tend to resttherein and rust the threads. This radiating slot or slots alsoestablishes a means for gripping one end of a lock washer which may beinserted between the insulating member and the ear or clamp.

I claim as my invention:

,1. An insulated hanger comprising an insulating member and a hingedsupport member to engage and encircle the insulating member andextending sufficiently low on the insulator member to protect'the sameand having means to engage a supporting wire.

2. An insulated hanger comprising an insulating member and a hingedsupport member to engage and encircle the insulating member andinclosing the sides of the insulator to protect it, a circumferentialgroove in the insulating member co-acting with a circumferentialprojection on the support member.

3. An insulated hanger comprising an insulating member, a support membercomprising a plurality of parts hinged together and engaging andencircling the insulating member and inclosing the sides of theinsulating member to protect it and means on each member to preventdisplacement of the parts when installed.

4. An insulated hanger for attachment to a supporting wire comprising aninsulated member, a hinged support member engaging and encircling theinsulating member and interposed between the supporting wire and theinsulating member and engaging the supporting wire and automaticallygripping the insulating member in proportion to the stress inthe'su-pporting wire.

5. An insulated hanger for attachment to a supporting wire comprising aninsulating member, a supporting member engaging and partly inclosing theinsulated member, means on the supporting member to engage thesupporting wire, hinged means secured to the supporting member betweenthe insulating member and the supporting wire and engaging thesupporting wire and held thereby in engagement with the insulatingmember by a pressure which varies with the stress in the supportingwire.

6. An insulating hanger for attachment to a supporting wire comprisingan insulating member, a support member provided with means on eitherside of the insulating member to engage the supporting wire, a hingedmember pivotally secured to the support member and interposed betweenthe support wire and the insulating member and arranged to be engaged bythe support wire at a point practically midway between the engagingmeans on the support member.

7. An insulating hanger for attachment to a supporting wire comprisingan insulating member, a support member provided with means on eitherside of the insulating member to engage the supporting wire, meanshinged to the support member and engaged by the supporting wireapproximately midway between the engaging means on the support memberfor pressing the hinged means into engagement with the insulatingmember.

8. An insulating hanger for attachment to a supporting wire comprisingan insulating member and a two-part hinged supporting member interposedbetween and adapted to engage the insulating member and encircle andsupport the same and provided with means at three points to engage asupporting wire, two points located on one part of the hinged supportand the third point on the other part of the hinged support and thesupporting member adapted to be held in engagement with the insulatingmember by the supporting wire.

In test mony whereof I afiix my signature.

GLENN HENRY BQLU-S.

